OPERATION & MAINTENANCE MANUAL SWE18UF
75
4.7 HYDRAULIC BREAKING OPERATION
Hydraulic breaking operation tips…if equipped
Choose hydraulic breaker with correct dimension and weight.
Consult with your dealer.
Multiple unit valve section assignment
The hydraulic pressure of section AUX (the hydraulic pressure of
the breaker section) is supplied by the section four of main valve
with pressure 12 MPa.
Note for hydraulic breaker tube fitting
1) When the hydraulic breaker is out of use, cover the pipe end
of arm and fit a plug at the end of hydraulic breaker hose to
avoid dirt entering into system.
2) Ensure the stock of cover and plug in tool compartment for
maintenance purpose.
3) Avoid dirt entering into system when changing bucket into
breaker.
4) After connection, check the oil leakage and bolts slack
condition.
Before fitting hydraulic breaker on the arm, read machine and
hydraulic breaker manuals carefully, and carry out the required
confirmation or inspection.
Carry out required inspection before daily operation.
1) Operate machine slowly, the stability of machine will be
decreased because the hydraulic breaker is heavier than the
bucket. Therefore, use dozer blade to support and work in
front of dozer blade.
2) Avoid hammering work with hydraulic breaker. Never use
boom or arm to break objects, otherwise it will damage
machine.
3) Don’t move objects with hydraulic breaker, otherwise it will
damage machine.
4) Don’t operate hydraulic breaker when hydraulic cylinder
piston retracts or extends fully, avoid damaging hydraulic
cylinder or machine.
5) If hydraulic breaker hose jumps abnormally, stop operation
immediately. The pressure change of breaker accumulator or
damaged accumulator will cause unusual hose jump, and
damage hydraulic breaker or machine.
6) When retracting front attachment, don’t allow the chisel of
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